20786689

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{2389}}^1$

素因数の和:2520

約数の個数: 16

約数和(自身を含む): 26156160

約数和(自身を除く): 5369471

約数列:

[1, 7, 11, 77, 113, 791, 1243, 2389, 8701, 16723, 26279, 183953, 269957, 1889699, 2969527, 20786689]

約数ペア:

[(1, 20786689), (7, 2969527), (11, 1889699), (77, 269957), (113, 183953), (791, 26279), (1243, 16723), (2389, 8701)]